Abdominal roller



FIG. 1 is a front view of an abdominal roller showing my new design, a back view being identical thereto;

FIG. 2 is a right side view of the abdominal roller, a left side view being identical thereto;

FIG. 3 is a top view of the abdominal roller;

FIG. 4 is a bottom view of the abdominal roller;

FIG. 5 is a cross-sectional view of the abdominal roller taken along line 5-5 of FIG. 3; and,

FIG. 6 is a top front side perspective view of the abdominal roller. 

CLAIM The ornamental design for a abdominal roller, as shown and described. 